Virgil "Static" Hawkins was exposed to a mutagenic gas that swept his city of Dakota, which gave him and other 'bang babies" superpowers. With the ability to control electromagnetism, Static joined the Teen Titans and continues to protect his city while serving on the team.

If we go by Marvel's definition, he's considered a mutate. Mutants are born with the potential to manifest their powers (scientifically known as homo sapiens superior). Mutates gain powers by exposure to mutagenic compounds or energy forms.